Question

On the basis of back bone of animals are divided into which part? Explain with examples

Answer 1

Answer:

Vertebrates (/ˈvɜːrtɪbrəts/) comprise all species of animals within the subphylum Vertebrata (/vɜːrtɪˈbreɪtə/) (chordates with backbones). Vertebrates represent the overwhelming majority of the phylum Chordata, with currently about 69,963 species described.[4] Vertebrates comprise such groups as the following:

jawless fishes, which include hagfish and lampreys

jawed vertebrates, which include:

cartilaginous fishes (sharks, rays, and ratfish)

bony fishes (coelacanths, lungfish, and ray-finned fish)

tetrapods (amphibians, reptiles, birds, and mammals)

Answer 2

Explanation:

Vertebrates are animals that have a backbone. All vertebrates belong to the phylum Chordata. They include fish, amphibians, reptiles, birds, and mammals.

Invertebrates are the animals that do not have a backbone. Examples of invertebrates include arthropods, mollusks, annelid, and cnidarians.

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